What is "Glass Fiber" - Definition & Explanation

Fiberglass is material made from extremely fine fibers of glass. It is widely used in the manufacture of insulation and textiles.

An inorganic fiber which is very strong, but has poor flexibility and poor abrasion resistance. Glass will not burn and will not conduct electricity. It is impervious to insects, mildew, and sunlight. Today, the primary use of glass fiber is in such industrial applications as insulation or reinforcement of composite structures.